- Now it's possible to specify the size of solid block and the number of CPU threads in "Add to archive" dialog box. - Default dictionary size was increased: Normal: 16 MB, Max: 32 MB. - Speed optimizations. - Benchmark was improved (new "b" command in command line version). - The number of DLL files was reduced. - Now it's possible to associate 7-zip with combined types like .tbz2 - switch -mhcf=off is not supported now. - If -t{Type} switch is not specified, 7-Zip now uses extension of archive to detect the type of archive. - Some bugs were fixed. - New localization: Welsh.